import fs from 'fs';

const readStream = fs.createReadStream('./bbb.txt', {
    start: 8,
    end: 22,
    highWaterMark: 3 
   });

   readStream.on('data', (data) => {
    console.log(data.toString());
   });
   
   readStream.on('open', (fd) => {
    console.log('通过流将⽂件打开~', fd);
   });

   readStream.on('end', () => {
    console.log('已经读取到end位置');
   });

   readStream.on('close', () => {
    console.log('⽂件读取结束, 并且被关闭');
   });
   
   